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<a href="#nested-classes">Data Structures</a> &#124;
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<div class="title">ip6_frag.c File Reference</div>  </div>
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<div class="textblock"><code>#include &quot;<a class="el" href="opt_8h.html">lwip/opt.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip6__frag_8h.html">lwip/ip6_frag.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip6_8h.html">lwip/ip6.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="icmp6_8h.html">lwip/icmp6.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="nd6_8h.html">lwip/nd6.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip_8h.html">lwip/ip.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="pbuf_8h.html">lwip/pbuf.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="memp_8h.html">lwip/memp.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="stats_8h.html">lwip/stats.h</a>&quot;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &quot;arch/bpstruct.h&quot;</code><br />
<code>#include &quot;arch/epstruct.h&quot;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structip6__reass__helper.html">ip6_reass_helper</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:af920fb8127d00dd7a8b809afd28723fe"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="ip6__frag_8c.html#af920fb8127d00dd7a8b809afd28723fe">IP_REASS_CHECK_OVERLAP</a>&#160;&#160;&#160;1</td></tr>
<tr class="separator:af920fb8127d00dd7a8b809afd28723fe"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a510934accf149433bdcf683993e79080"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="ip6__frag_8c.html#a510934accf149433bdcf683993e79080">IP_REASS_FREE_OLDEST</a>&#160;&#160;&#160;1</td></tr>
<tr class="separator:a510934accf149433bdcf683993e79080"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:adbd666d01adcbbbc5966938f02025b7c"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structpbuf.html">pbuf</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="ip6__frag_8c.html#adbd666d01adcbbbc5966938f02025b7c">ip6_reass</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p)</td></tr>
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<tr class="memitem:a3ef87acbc615d5eb015104f83bbe7d37"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="ip6__frag_8c.html#a3ef87acbc615d5eb015104f83bbe7d37">ip6_frag</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>, const <a class="el" href="ip6__addr_8h.html#aaca9e796e93a355294c4954c08d01762">ip6_addr_t</a> *dest)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>IPv6 fragmentation and reassembly. </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="af920fb8127d00dd7a8b809afd28723fe"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af920fb8127d00dd7a8b809afd28723fe">&#9670;&nbsp;</a></span>IP_REASS_CHECK_OVERLAP</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define IP_REASS_CHECK_OVERLAP&#160;&#160;&#160;1</td>
        </tr>
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<p>Setting this to 0, you can turn off checking the fragments for overlapping regions. The code gets a little smaller. Only use this if you know that overlapping won't occur on your network! </p>

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<a id="a510934accf149433bdcf683993e79080"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a510934accf149433bdcf683993e79080">&#9670;&nbsp;</a></span>IP_REASS_FREE_OLDEST</h2>

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          <td class="memname">#define IP_REASS_FREE_OLDEST&#160;&#160;&#160;1</td>
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<p>Set to 0 to prevent freeing the oldest datagram when the reassembly buffer is full (IP_REASS_MAX_PBUFS pbufs are enqueued). The code gets a little smaller. Datagrams will be freed by timeout only. Especially useful when MEMP_NUM_REASSDATA is set to 1, so one datagram can be reassembled at a time, only. </p>

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<h2 class="groupheader">Function Documentation</h2>
<a id="a3ef87acbc615d5eb015104f83bbe7d37"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3ef87acbc615d5eb015104f83bbe7d37">&#9670;&nbsp;</a></span>ip6_frag()</h2>

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          <td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ip6_frag </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *&#160;</td>
          <td class="paramname"><em>p</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *&#160;</td>
          <td class="paramname"><em>netif</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="ip6__addr_8h.html#aaca9e796e93a355294c4954c08d01762">ip6_addr_t</a> *&#160;</td>
          <td class="paramname"><em>dest</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Fragment an IPv6 datagram if too large for the netif or path MTU.</p>
<p>Chop the datagram in MTU sized chunks and send them in order by pointing PBUF_REFs into p</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">p</td><td>ipv6 packet to send </td></tr>
    <tr><td class="paramname">netif</td><td>the netif on which to send </td></tr>
    <tr><td class="paramname">dest</td><td>destination ipv6 address to which to send</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>ERR_OK if sent successfully, err_t otherwise </dd></dl>

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<a id="adbd666d01adcbbbc5966938f02025b7c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#adbd666d01adcbbbc5966938f02025b7c">&#9670;&nbsp;</a></span>ip6_reass()</h2>

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<div class="memproto">
      <table class="memname">
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          <td class="memname">struct <a class="el" href="structpbuf.html">pbuf</a>* ip6_reass </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *&#160;</td>
          <td class="paramname"><em>p</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Reassembles incoming IPv6 fragments into an IPv6 datagram.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">p</td><td>points to the IPv6 Fragment Header </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>NULL if reassembly is incomplete, pbuf pointing to IPv6 Header if reassembly is complete </dd></dl>

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